The prelaunchtask ‘c/c++: clang++ build active file’ terminated with exit code -1.

When you encounter the error message “the prelaunchtask ‘c/c++: clang++ build active file’ terminated with exit code -1”, it means that the pre-launch task for building your active C/C++ file using clang++ has failed to execute properly and returned an exit code of -1.

An exit code of -1 generally indicates an error or failure in the task execution. It could occur due to various reasons such as:

• Invalid or buggy source code
• Missing or incorrect compiler configuration
• Insufficient system resources
• Conflict with other tools or extensions

To better understand this issue, let’s consider an example:

Suppose you have a C++ file named “main.cpp” that you want to build and run using the clang++ compiler. However, when you try to execute the prelaunch task for building the active file, you encounter the mentioned error.

This error could occur due to various reasons:

• The source code of “main.cpp” contains syntax errors or logical issues.
• The clang++ compiler is not properly configured or installed on your system.
• Your system might have insufficient memory or processing power to compile the file.
• There could be a conflict or compatibility issue with other tools or extensions in your development environment.

To resolve this error, you can follow these steps:

1. Verify that your source code is correct and doesn’t contain any errors.
2. Ensure that the clang++ compiler is correctly installed and configured on your system.
3. Check your system’s resource usage and free up any unnecessary processes or applications to ensure enough resources are available.
4. Disable or remove any conflicting tools or extensions that might interfere with the prelaunch task.

By addressing these possible causes, you can resolve the error and successfully execute the prelaunch task for building your C/C++ file using clang++.